html,body{
    padding: 0;
    margin: 0;
}
.m-out{
    width: 100vw;
    height: 100vh;
    background: #f8f8f8;
}
.content{
    width: 100%;
    height: 100%;
    padding-bottom: 50px;
    box-sizing: border-box;
    background: #f6f6f6;
}
.m-footer{
    width: 100%;
    position:fixed;
    bottom:0;
    height: 50px;
    line-height: 50px;
    text-align: center;
    color: #333;
    background: #fff;
}
.m-footer span{
    display: inline-block;
    width: 29%;
    margin: 0 2%;
}
.red{
    color: red;
}